The two cams in the EG33 head are tied together by a pair of gears, the Timing belt only turns the lower (exhaust) cam, which throught the gears turn the upper(intake) cam, so if the t-belt breaks, the valves CAN'T come in contact, as they stay in time with each other through the gears....the gears themselves would have to break to let the valve hit each other...
Why Subaru didn't use this design on thier other DOHC motors is beyond me
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Huck
Subaru Ambassador
92 SVX LS-Tour Magnaflow Exhaust, 5-Spd-AWD
88 XT6 AWD 5-Speed "Bride of FrankenWedge"
15 Impreza Premium Sedan
15 Crosstrek XV 5-Speed
My 5-Speed "How-To" Write-up
1976 Pontiac Firebird Formula
Current Count of Subaru's Owned.... "70"